Sometimes, if you are doing well in a lane and your opponent is playing passive, you may want to max your w before your e. Because you won't need a way out as often. But if you are shoving tower a lot, you want to max e because your e gives you extra attack speed, and can help you take down towers quicker.
The tank items should be built after mallet/cleaver and your boots. Everything should vary on how well your team and the other team are doing. Also, whether or not the majority is ability power of attack damage. If their team is mostly ad/ap, use tabi/mercury treads. Tank items also vary accordingly.